9. BALANCE ADJUSTMENT
In order to ensure the highest measuring accuracy, it is recommended to periodically
introduce to balance memory a corrective factor of indications in relation to a mass
standard – i.e. balance adjustment.
Adjustment should be carried out:
- Before the beginning of a weighing procedure,
- If long breaks between following measuring series occur
- If temperature inside the balance changes more than: 1°C within last hour
Types of adjustment
- Internal automatic adjustment
* triggered by temperature change
* triggered by elapsing time
- Manual internal adjustment
* initiated from balance’s keyboard (triggered by pressing CAL key)
- Adjustment with an external weight
* with declared mass which cannot be modified
* with optional mass which needs to be specified before process initiation
Caution:
In case of verified balances only the automatic internal adjustment and manual internal
adjustment systems are available for a user.
Remember to perform the adjustment when there is no load on the pan!
9.1. Automatic balance adjustment
Activation of automatic internal adjustment is triggered on:
- Elapsing a specified amount of time from last carried out adjustment process, or
- Ambient temperature changes by a value specified by the balance manufacturer
On recognizing any of the above case, balance’s display shows the following message
box.
Fig. 13. Automatic internal adjustment – display content
The time delay enables the user to take the weighed load of the weighing pan, if a
weighing process is in progress. Pressing T/O key causes temporary delay of the
adjustment process initiation. In approximately 5 minutes the needs for adjustment is
triggered once again.
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